boson.py 文件源码

def _eval_innerproduct_BosonCoherentBra(self, bra, **hints):
        if self.alpha == bra.alpha:
            return Integer(1)
        else:
            return exp(-(abs(self.alpha)**2 + abs(bra.alpha)**2 - 2 * conjugate(bra.alpha) * self.alpha)/2)